Regional frequency analysis of extreme precipitation and its spatio-temporal characteristics in the Huai River Basin, China
文献类型：SCI/SSCI论文
| 作者 | Xia J. |
| 发表日期 | 2014 |
| 关键词 | Extreme rainfall Regional frequency analysis L-moments Monte Carlo simulation The Huai River Basin l-moment hydrological model rainfall extremes uncertainty parameter trends statistics climate pattern |
| 英文摘要 | With the increasing exposure of populations and economy to natural hazards, the spatio-temporal characteristics of extreme rainfall remain a key subject of study. Based on annual maximum rainfall (AM) and peaks over threshold rainfall series at 30 meteorological stations during 1960-2011 in the Huai River Basin (HRB), spatio-temporal characteristics of extreme rainfall are analyzed through regional frequency analysis method using L-moments. The accuracy and uncertainty analysis of quantile estimations are also carried out, and the regional and at-site frequency analyses are compared. Results indicate the following: (1) During 1960-2011, AM precipitation at 20 stations in the HRB shows an increasing trend, while at the other 10 stations, it shows a decreasing trend. And both the increased and decreased trends are not significant. (2) The HRB can be categorized into three homogeneous regions via cluster analysis. For both at-site and regional frequency analyses, the root mean square error values increase with the increase in return periods. The estimations are reliable enough for the return periods of less than 100 years. The quantile estimates of large return period from regional frequency analysis are more accurate and have smaller uncertainty than those from at-site frequency analysis. (3) Extreme precipitation in the HRB concentrates in the upstream of the Huai River and YiShuSi water system in the east of the HRB. Generally, the area with extreme precipitation, especially the upper reaches of the Huai River and Yimeng Mountain areas, also has large standard variations of extreme precipitation, which will increase the risk of natural hazards. |
| 出处 | Natural Hazards |
| 卷 | 70 |
| 期 | 1 |
| 页 | 195-215 |
| 收录类别 | SCI |
| 语种 | 英语 |
| ISSN号 | 0921-030X |
| 源URL | [http://ir.igsnrr.ac.cn/handle/311030/29916]  |
| 专题 | 地理科学与资源研究所_历年回溯文献 |
| 推荐引用方式 GB/T 7714 | Xia J.. Regional frequency analysis of extreme precipitation and its spatio-temporal characteristics in the Huai River Basin, China. 2014. |
入库方式： OAI收割
来源：地理科学与资源研究所
浏览0
下载0
收藏0
其他版本
除非特别说明，本系统中所有内容都受版权保护，并保留所有权利。